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Average rating based on 4 review(s)

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I put this and a thrust nozle on my crf 230 and now i blow away my dads xr 250

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UNBELIEVABLE service! I ordered this product on Wednesday afternoon around 1 p.m. and when I woke up Thursday around 10:30 it was at my door!! I didn't even go for the overnight shipping! Excellent service!

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Nice to get higher revs just dont be stupid with it and over rev the hell out off it good mods worth the money.

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i put this rev box on my crf 230 and raced my friends 400 scrambler, and blew my engine!! [Editorial Comment] For those of you who are concerned about this review...these rev boxes are one of the most popular performance add-ons available. This rev box is not responsible for this persons engien problems.

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